16 lines
438 B
Markdown
16 lines
438 B
Markdown
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---
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title: useLayerTree
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description: Primitive context helper for LayerTreeRoot descendants.
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---
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# useLayerTree
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`useLayerTree()` reads the local layer-tree context provided by `LayerTreeRoot`.
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Use it inside custom layer-tree descendants that need access to tree items, selection state, expansion state, or row actions.
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## Related APIs
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- [LayerTreeRoot](../components/layer-tree-root)
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- [LayerTreeItem](../components/layer-tree-item)
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